Ken I heat with oil and recieved 2 $1000 bills within 3 weeks last year. So it doesn't take long and you are saving money. I have a fireplace insert stove and the pipe goes up the chimney. They can be vented out the side of the house but the smoke can be forced back into the stove in high winds.
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2012 Chevy Camaro ZL1 6MT coupe Back N' Black. 680hp 
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